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1da177e4 LT |
1 | /* |
2 | * linux/include/asm-ia64/topology.h | |
3 | * | |
4 | * Copyright (C) 2002, Erich Focht, NEC | |
5 | * | |
6 | * All rights reserved. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | */ | |
13 | #ifndef _ASM_IA64_TOPOLOGY_H | |
14 | #define _ASM_IA64_TOPOLOGY_H | |
15 | ||
16 | #include <asm/acpi.h> | |
17 | #include <asm/numa.h> | |
18 | #include <asm/smp.h> | |
19 | ||
20 | #ifdef CONFIG_NUMA | |
21 | /* | |
22 | * Returns the number of the node containing CPU 'cpu' | |
23 | */ | |
24 | #define cpu_to_node(cpu) (int)(cpu_to_node_map[cpu]) | |
25 | ||
26 | /* | |
27 | * Returns a bitmask of CPUs on Node 'node'. | |
28 | */ | |
29 | #define node_to_cpumask(node) (node_to_cpu_mask[node]) | |
30 | ||
31 | /* | |
32 | * Returns the number of the node containing Node 'nid'. | |
33 | * Not implemented here. Multi-level hierarchies detected with | |
34 | * the help of node_distance(). | |
35 | */ | |
36 | #define parent_node(nid) (nid) | |
37 | ||
38 | /* | |
39 | * Returns the number of the first CPU on Node 'node'. | |
40 | */ | |
41 | #define node_to_first_cpu(node) (__ffs(node_to_cpumask(node))) | |
42 | ||
43 | void build_cpu_to_node_map(void); | |
44 | ||
45 | /* sched_domains SD_NODE_INIT for IA64 NUMA machines */ | |
46 | #define SD_NODE_INIT (struct sched_domain) { \ | |
47 | .span = CPU_MASK_NONE, \ | |
48 | .parent = NULL, \ | |
49 | .groups = NULL, \ | |
50 | .min_interval = 80, \ | |
51 | .max_interval = 320, \ | |
52 | .busy_factor = 320, \ | |
53 | .imbalance_pct = 125, \ | |
54 | .cache_hot_time = (10*1000000), \ | |
55 | .cache_nice_tries = 1, \ | |
56 | .per_cpu_gain = 100, \ | |
57 | .flags = SD_LOAD_BALANCE \ | |
58 | | SD_BALANCE_EXEC \ | |
59 | | SD_BALANCE_NEWIDLE \ | |
60 | | SD_WAKE_IDLE \ | |
61 | | SD_WAKE_BALANCE, \ | |
62 | .last_balance = jiffies, \ | |
63 | .balance_interval = 1, \ | |
64 | .nr_balance_failed = 0, \ | |
65 | } | |
66 | ||
67 | /* sched_domains SD_ALLNODES_INIT for IA64 NUMA machines */ | |
68 | #define SD_ALLNODES_INIT (struct sched_domain) { \ | |
69 | .span = CPU_MASK_NONE, \ | |
70 | .parent = NULL, \ | |
71 | .groups = NULL, \ | |
72 | .min_interval = 80, \ | |
73 | .max_interval = 320, \ | |
74 | .busy_factor = 320, \ | |
75 | .imbalance_pct = 125, \ | |
76 | .cache_hot_time = (10*1000000), \ | |
77 | .cache_nice_tries = 1, \ | |
78 | .per_cpu_gain = 100, \ | |
79 | .flags = SD_LOAD_BALANCE \ | |
80 | | SD_BALANCE_EXEC, \ | |
81 | .last_balance = jiffies, \ | |
82 | .balance_interval = 100*(63+num_online_cpus())/64, \ | |
83 | .nr_balance_failed = 0, \ | |
84 | } | |
85 | ||
86 | #endif /* CONFIG_NUMA */ | |
87 | ||
88 | #include <asm-generic/topology.h> | |
89 | ||
90 | #endif /* _ASM_IA64_TOPOLOGY_H */ |